Board packet · transit data quality · checked 2026-08-01
Chatham Area Transit (CAT)
Grade F · 8.7 / 100
Unchanged since 2026-07-31.
What this grade measures
The quality of the schedule data this agency publishes for trip-planning apps: whether riders using Google Maps, Apple Maps, or Transit see current, correct, and complete information. It measures the data feed, not service quality or operations.
Progress this period
No newly cleared items this period. The score and trend above reflect where the feed stands today.
What needs attention next
Three improvements, in priority order, each sized so the board can see what it is approving:
Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.
Service data ended 1728 day(s) ago. When the calendar runs out, trip planners stop showing this agency even though the buses are still running. Riders are told the service does not exist.
Estimated effort: Usually one export setting; export on a schedule so it never lapses again.
Review the rule documentation for 'point_near_origin' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
Point near origin (flagged by the MobilityData validator). See the linked rule for what this affects.
Estimated effort: Varies.
Re-generate shape distances in your export; flag to your vendor if it persists.
Some trips have stop times whose distances along the route go backwards. Apps can show buses jumping backwards or mis-order stops.
Estimated effort: Usually an export-tool fix, not hand editing.
Finding handoff
Move one finding to a recheck
Select one finding. Copy the request, make the change in the feed-producing tool, then compare the next complete run.
- Feed evidence
- Service data ended 1728 day(s) ago.
- Next action
- Re-export the feed with a calendar that reaches further out, and set feed_info feed_end_date past your next service change.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
- Feed evidence
- Point near origin (flagged by the MobilityData validator).
- Next action
- Review the rule documentation for 'point_near_origin' at https://gtfs-validator.mobilitydata.org/rules.html and check the flagged rows in your feed.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
- Feed evidence
- Some trips have stop times whose distances along the route go backwards.
- Next action
- Re-generate shape distances in your export; flag to your vendor if it persists.
- Recheck
- Publish the changed feed at the same URL. On the next complete, comparable scorecard run, confirm that this finding is no longer reported.
Copy handoff text
Produced by the GTFS Scorecard, an open-source data quality tool. A data-quality read to support the board conversation, not an official compliance determination. Live scorecard: https://gtfsscorecard.org/agency/chatham-area-transit-cat/. Rubric v1.3, validator 8.0.1.